2 years ago

Which tool would be most useful to identify areas with frequent earthquakes to predict future earthquakes?

Physics

1 answer:

enyata [817]2 years ago

6 0

It is a seismograph that would be most useful.

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A ball having a mass of 200 g is released from rest at a height of 400 mm above a very large fixed metal surface. If the ball re

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Answer:

0.9

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3 years ago

What do you think would happen to the force of attraction of two interacting charges if their distance apart is halved?

sweet [91]

Answer:

The new force becomes 4 times the initial force.

Explanation:

The force of attraction or repulsion is given by the relation as follows :

$F=k\dfrac{q_1q_2}{d^2}$

Where

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F is inversely proportional to the distance between charges.

If the distance is halved, d'=(d/2), new force is given by :

$F'=k\dfrac{q_1q_2}{d'^2}\\\\=k\dfrac{q_1q_2}{(\dfrac{d}{2})^2}\\\\=k\dfrac{q_1q_2}{\dfrac{d^2}{4}}\\\\=4\times \dfrac{kq_1q_2}{d^2}\\\\F'=4F$

So, the new force becomes 4 times the initial force.

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2 years ago

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Aleks04 [339]

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